进入一个ALV表格，想下载数据，一般点清单-->输出-->电子数据表。
会出来一个对话框，可选择导出成各类格式。
在下端有一个“始终使用选定的格式”，一旦勾上，就再也不会弹出选择框了。
以下是恢复原有导出方式的方法：
- Call transaction SE38, enter program SALV_BS_ADMIN_MAINTAIN, and press F8.
- Follow the parameters below :
- _select_deleteon the Actions Group
- _selectDETAILED SELECTION on the General Data :
- On Client - your number
- User : <user name>
- Hit _execUTE.
- Press ENTER on the POPUP
- If there is an entry in the report that will need to be deleted.
Also, make sure that the entry you will _delete(for the user) has a value of GUI_ALV_XML_VER on field Parameter.
- _selectthe line and hit the _deleteicon .
- Press Y to continue delete. Press ENTER on the popup.
- Then EXIT all the way out of the program.
特别要注意:General Data 下面 Client 和User，VLA Data 选ALV_GUI .